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radeons: only force staging uploads for VRAM when all VRAM is not visible

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Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/7951>
This commit is contained in:
Marek Olšák
2020-12-06 14:01:15 -05:00
parent d3d6d38145
commit 3404c3111e
1 changed files with 13 additions and 11 deletions
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src/gallium/drivers/radeonsi/si_buffer.c
+13 -11
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@@ -149,18 +149,20 @@ void si_init_resource_fields(struct si_screen *sscreen, struct si_resource *res,
if (res->domains & RADEON_DOMAIN_VRAM) {
res->vram_usage = size;
/* We don't want to evict buffers from VRAM by mapping them for CPU access,
* because they might never be moved back again. If a buffer is large enough,
* upload data by copying from a temporary GTT buffer. 8K might not seem much,
* but there can be 100000 buffers.
*
* This tweak improves performance for viewperf.
*/
const unsigned min_size = 8196; /* tuned to minimize mapped VRAM */
const unsigned max_staging_uploads = 1; /* number of uploads before mapping directly */
if (!sscreen->info.all_vram_visible) {
/* We don't want to evict buffers from VRAM by mapping them for CPU access,
* because they might never be moved back again. If a buffer is large enough,
* upload data by copying from a temporary GTT buffer. 8K might not seem much,
* but there can be 100000 buffers.
*
* This tweak improves performance for viewperf.
*/
const unsigned min_size = 8196; /* tuned to minimize mapped VRAM */
const unsigned max_staging_uploads = 1; /* number of uploads before mapping directly */
res->max_forced_staging_uploads = res->b.max_forced_staging_uploads =
sscreen->info.has_dedicated_vram && size >= min_size ? max_staging_uploads : 0;
res->max_forced_staging_uploads = res->b.max_forced_staging_uploads =
sscreen->info.has_dedicated_vram && size >= min_size ? max_staging_uploads : 0;
}
} else if (res->domains & RADEON_DOMAIN_GTT) {
res->gart_usage = size;
}